<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="父ID" prop="pid">
        <el-input v-model="queryParams.pid" placeholder="请输入父ID" clearable @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item label="栏目名称" prop="name">
        <el-input v-model="queryParams.name" placeholder="请输入栏目名称" clearable @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item label="显示顺序" prop="postSort">
        <el-input v-model="queryParams.postSort" placeholder="请输入显示顺序" clearable @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd"
          v-hasPermi="['cms:item:add']">新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="info" plain icon="el-icon-sort" size="mini" @click="toggleExpandAll">展开/折叠</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-if="refreshTable" v-loading="loading" :data="itemList" row-key="id" :default-expand-all="isExpandAll"
      :tree-props="{ children: 'children', hasChildren: 'hasChildren' }">

      <el-table-column label="栏目名称" align="left" prop="name" />
      <el-table-column label="ID" prop="id" width="50" />
      <el-table-column label="父ID" prop="pid" width="50" />
      <el-table-column label="显示顺序" align="center" prop="postSort" />
      <el-table-column label="状态" align="center" prop="status">
        <template slot-scope="scope">
          <dict-tag :options="dict.type.sys_normal_disable" :value="scope.row.status" />
        </template>
      </el-table-column>
      <el-table-column label="备注" align="center" prop="remark" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)"
            v-hasPermi="['cms:item:edit']">修改</el-button>
          <el-button size="mini" type="text" icon="el-icon-plus" @click="handleAdd(scope.row)"
            v-hasPermi="['cms:item:add']">新增</el-button>
          <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)"
            v-hasPermi="['cms:item:remove']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加或修改站点栏目对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="父ID" prop="pid">
          <treeselect v-model="form.pid" :options="itemOptions" :normalizer="normalizer" placeholder="请选择父ID" />
        </el-form-item>
        <el-form-item label="栏目名称" prop="name">
          <el-input v-model="form.name" placeholder="请输入栏目名称" />
        </el-form-item>
        <el-form-item label="显示顺序" prop="postSort">
          <el-input v-model="form.postSort" placeholder="请输入显示顺序" />
        </el-form-item>
        <el-form-item label="状态" prop="status">
          <el-radio-group v-model="form.status">
            <el-radio v-for="dict in dict.type.sys_normal_disable" :key="dict.value" :label="dict.value">{{ dict.label
            }}
            </el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="备注" prop="remark">
          <el-input v-model="form.remark" type="textarea" placeholder="请输入内容" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listItem, getItem, delItem, addItem, updateItem } from "@/api/cms/item";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";

export default {
  name: "Item",
  dicts: ['sys_normal_disable'],
  components: {
    Treeselect
  },
  data() {
    return {
      // 遮罩层
      loading: true,
      // 显示搜索条件
      showSearch: true,
      // 站点栏目表格数据
      itemList: [],
      // 站点栏目树选项
      itemOptions: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 是否展开，默认全部展开
      isExpandAll: true,
      // 重新渲染表格状态
      refreshTable: true,
      // 查询参数
      queryParams: {
        pid: null,
        name: null,
        postSort: null,
        status: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        pid: [
          { required: true, message: "父ID不能为空", trigger: "blur" }
        ],
        name: [
          { required: true, message: "栏目名称不能为空", trigger: "blur" }
        ],
        postSort: [
          { required: true, message: "显示顺序不能为空", trigger: "blur" }
        ],
        status: [
          { required: true, message: "状态不能为空", trigger: "blur" }
        ],
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询站点栏目列表 */
    getList() {
      this.loading = true;
      listItem(this.queryParams).then(response => {
        this.itemList = this.handleTree(response.data, "id", "pid");
        this.loading = false;
      });
    },
    /** 转换站点栏目数据结构 */
    normalizer(node) {
      if (node.children && !node.children.length) {
        delete node.children;
      }
      return {
        id: node.id,
        label: node.name,
        children: node.children
      };
    },
    /** 查询站点栏目下拉树结构 */
    getTreeselect() {
      listItem().then(response => {
        this.itemOptions = [];
        const data = { id: 0, name: '顶级节点', children: [] };
        data.children = this.handleTree(response.data, "id", "pid");
        this.itemOptions.push(data);
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        pid: null,
        name: null,
        postSort: null,
        status: "0",

        createBy: null,
        createTime: null,
        updateBy: null,
        updateTime: null,
        remark: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    /** 新增按钮操作 */
    handleAdd(row) {
      this.reset();
      this.getTreeselect();
      if (row != null && row.id) {
        this.form.pid = row.id;
      } else {
        this.form.pid = 0;
      }
      this.open = true;
      this.title = "添加站点栏目";
    },
    /** 展开/折叠操作 */
    toggleExpandAll() {
      this.refreshTable = false;
      this.isExpandAll = !this.isExpandAll;
      this.$nextTick(() => {
        this.refreshTable = true;
      });
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      this.getTreeselect();
      if (row != null) {
        this.form.pid = row.id;
      }
      getItem(row.id).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改站点栏目";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateItem(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addItem(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      this.$modal.confirm('是否确认删除站点栏目编号为"' + row.id + '"的数据项？').then(function () {
        return delItem(row.id);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => { });
    }
  }
};
</script>
